Window Centering Helper Portable

Window Centering Helper is a background program that will help you center the window: it can do it automatically or using keyboard shortcuts.
The program is intended mainly for people who have such a fetish, but not only: a centered window relative to the working area improves the comfort of work, because it is natural and should relieve - not to a large extent, but still - the user.

Try it - maybe it's a program for you.